package com.iuie.ns.frame.utils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class URLUtil {

	private URLUtil() {

	}
	
	private static final Pattern URL_PATTERN = Pattern.compile("^((https|http|ftp|rtsp|mms)?://)" 
		   	  + "?(([0-9a-z_!~*'().&=+$%-]+: )?[0-9a-z_!~*'().&=+$%-]+@)?" //ftp的user@
		      + "(([0-9]{1,3}\\.){3}[0-9]{1,3}" // IP形式的URL- 199.194.52.184
		      + "|" // 允许IP和DOMAIN（域名）
		      + "([0-9a-z_!~*'()-]+\\.)*" // 域名- www.
		      + "([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]\\." // 二级域名
		      + "[a-z]{2,6})" // first level domain- .com or .museum
		      + "(:[0-9]{1,4})?" // 端口- :80
		      + "((/?)|" // a slash isn't required if there is no file name
		      + "(/[0-9a-z_!~*'().;?:@&=+$,%#-]+)+/?)$");
	
	/**
	 * 
	 * @desc 验证URL合法性
	 * @author iuie
	 * @date 2017年4月5日 上午8:26:57
	 * @param url
	 * @return
	 */
	public static boolean isValid(String url){
		Matcher matcher = URL_PATTERN.matcher(url);
		return matcher.matches();
	}

}
